I have a bill of materials as per the attached image.
I have highlighted the issue. I have two window frames Item 20. Item 20.1 shows RSA60x60x6 but the quantity is 4 when it should be 8 if there are two window frames.
Why is it not picking up that there should be 8 pieces of angle?
How you set it up with indented detailed numbering in your bom. You have 2 items (20) with 4 items (20.1) each in it 2x4=8.